Abstract: A zeolitic material with a crystalline structure of MFI type has a ratio of silica to alumina which is lower than 26, and is hydrothermally prepared without organic template reagents or seeding procedures. Crystalline structure is obtained by forming a mixture of a silicon dioxide source, an alkali metal hydroxide, an aluminum source and water, all reactants with the following molar ratios: ##EQU1## where M is an alkali metal, and reacting the mixture at a temperature from 160.degree. to 180.degree. C. for 40-80 hours. The material is characterized by X-ray diffraction, and has good cracking activity and improved selectivity for gasoline octanes.

Abstract: A laminar clay having ion-exchange property is mixed with a solution containing polynuclear metal hydroxo cations or positively charged hydroxide or oxide fine particles to serve as precursor ions (3) of inorganic pillars so as to exchange a part of cations (2) between clay layers (1) with the precursor ions (3) of the inorganic pillars. Next, the laminar clay thus obtained is heat-treated at 100.degree. to 900.degree. C. to generate a porous clay intercalation compound, this porous clay intercalation compound is mixed with an ammonium salt aqueous solution to ion-exchange remaining cations (2) with ammonium ions (5). This porous clay intercalation compound is heat treated again at 200.degree. to 900.degree. C. to desorb ammonia, so as to allow hydrogen ions (6) to be carried in the pore portions of the porous clay intercalation compound and on its surface portions.

Abstract: Alumina heat transfer solids are admixed with a catalyst, or catalysts, and used in conducting high temperature fluidized bed reactions, particularly in a process for the production of hydrogen and carbon monoxide from a low molecular weight hydrocarbon by contact with a fluidized bed of catalyst and said heat transfer solids at high temperature in the presence of oxygen, or steam, or both oxygen and steam. The particulate heat transfer solids are characterized as having a performance index, PI, greater than 20, preferably greater than 40, as characterized by the formula PI=[(i).times.(ii).times.(iii).times.(iv)].sup.-1 where (i) the peripheral outer surface of the particle contains <5 atom % (Si+B) as impurities, and (ii) <20 atom % Na, Fe, Ca and Ti as impurities, where the bulk concentrations of the (Si+B) is sufficient to migrate into and contaminate the outer surface layer of the particles at process conditions. Moreover the (iii) tapped bulk density of the particles range from about 1.

Abstract: A catalyst for purifying exhaust gas, comprising a zeolite carrier having a mole ratio of SiO.sub.2 /Al.sub.2 O.sub.3 of from 20 to 200, and a compound oxide of copper and silicon supported on the carrier. The catalyst has high activity for elimination of nitrogen oxides (NO.sub.x) even in the presence of both oxygen and water vapor, and also has excellent durability at high temperatures. The catalyst is therefore effective in eliminating nitrogen oxides from exhaust gases from automobiles, boilers and the like.

Abstract: Hydrogen sulfide is removed from a fluid stream containing hydrogen sulfide by contacting the fluid stream under suitable absorbing conditions with an absorbing composition consisting essentially of zinc oxide and silica. Additionally, the absorbing composition may contain binders and may be promoted, preferably with nickel oxide.

Abstract: A hydrocarbon conversion catalyst for converting petroleum distillates of different boiling ranges, residue oils, and crude oils, especially the heavy hydrocarbons containing high nickel, into high quality gasoline and C.sub.3 and C.sub.4 olefins. The catalyst of the invention comprises three zeolitic active components consisting of a rare-earth-containing pentasil type high silica zeolite ZRP, a REY zeolite, and a high silica Y zeolite, in a total content of 10-40 wt % based on the total weight of the catalyst, and the remainder synthetic matrix or semi-synthetic matrix comprising 10-40 wt % silica and/or alumina binder. In the total amount of the active components, zeolite ZRP, REY, and the high silica Y are 3-50, 12-75, and 12-75 wt % respectively. The zeolite ZRP used in the catalyst is characterized in an anhydrous chemical composition of the formula 0.01-0.30 RE.sub.2 O.sub.3.0.4-1.0 Na.sub.2 O.Al.sub.2 O.sub.3.20-60 SiO.sub.

Abstract: An improved hydroconversion process, particularly a hydrocracking process, employs a supported catalyst containing metals of Group VI and/or VIII. The catalyst support comprises a crystalline aluminosilicate of the zeolite Y type, a binder and a dispersion of silica-alumina in an alumina matrix. The catalyst support composition comprises less than 25% by weight of the zeolite material, more than 25% by weight of the binder and at least 30% by weight of the dispersion.

Abstract: A formed nickel catalyst useful in fixed bed hydrogenation of fatty materials is described. The catalyst comprises from about 10% to about 50% by weight of nickel and from about 3% to about 30% by weight of at least one clay mineral binder. The catalyst may also contain from about 20% to about 60% by weight of silica and from about 1% to about 10% by weight of alumina. A process also is described for preparing such formed nickel catalyst. The use of such nickel catalyst in the hydrogenation of fatty materials such as fatty acids and esters also is described.

Abstract: A process for preparing a metallosilicate catalyst includes the steps of: forming a mixture of at least one non-alkali metal, a templating agent, and an organic base; adding a silicon additive to the mixture so as to form a metallosilicate hydrogel; aging the hydrogel to obtain a crystalline metallosilicate composition; washing and drying the crystalline composition; and calcining the crystalline composition so as to provide a metallosilicate catalyst. Two or more non-alkali metals may be selected so as to provide a multifunctional catalyst.

Abstract: A catalyst is described for reducing the quantity of nitrogen oxides in lean exhaust gas of motor vehicle engines. The catalyst contains, on a structure reinforcing body, a first catalytic coating of an aluminum oxide and/or cerium oxide of large surface area impregnated with a mixture of iridium and platinum as catalytically active noble metal components. A second catalytic coating including a zeolite of the mordenite type containing copper and/or iron is applied to the first coating layer.

Abstract: A novel zeolite characterized by a large number of secondary pores, a substantially decreased lattice constant, and a substantially decreased acid site density is attained by hydrothermal and acid-treating of an ultrastable Y-zeolite or a superultrastable Y-zeolite.

Abstract: There are provided a catalyst, a method for making this catalyst, and a process for using this catalyst in the alkylation of an isoparaffin with an olefin to provide an alkylate. The catalyst may be made from an as-synthesized material which, upon calcination, is capable of generating zeolites designated MCM-22. The as-synthesized material is then combined with a binder material, such as alumina, by an extrusion process. The uncalcined bound material may then be ammonium exchanged, followed by a calcination treatment. The as-synthesized material may also be swollen with a suitable swelling agent, such as a cetyltrimethylammonium compound, prior to the binding process.

Abstract: High-strength, non-agglomerated uniform porous microspheres of silica produced by spray drying a mixture comprising a colloidal silica sol and an additive selected from ammonium citrate or urea; an attrition resistant catalytic composite consisting essentially of metal crystallites such as palladium, platinum-palladium on said silica microsphere and method for preparing the same; and an improved process for making hydrogen peroxide from the direct combination of hydrogen and oxygen in the presence of said attrition resistant catalytic composite.

Abstract: A gas adsorbing element is formed into a honeycomb-shaped laminate having many small channels penetrating from one end surface to the other and in which hydrophobic high silica zeolite powder is exposed on the walls of the small channels. The hydrophobic high silica zeolite is, for example, a zeolite which is produced by removing most of the aluminum component from an ordinary zeolite. In forming the honeycomb-shaped laminate, it is favorable that non-flammable sheets are laminated and the laminate is impregnated with a dispersion of high silica zeolite powder and with an inorganic binder, and that the high silica zeolite powder is fixed in fiber gaps and on the surface of the non-flammable paper. It is desirable that the non-flammable sheet is a low density inorganic fiber paper and is baked either before or after forming the honeycomb-shaped laminate.

Abstract: A process for producing zeolite aggregates involves providing a formable paste composed of zeolite, a binder composed of an organic/metal oxide containing aluminum, a peptizing agent and water; forming the paste into an aggregate, preferably by extruding into an extrudate; curing the aggregate; hydro-thermally calcining the aggregate; and washing the hydro-thermally calcined aggregate with a washing medium, preferably followed by rinsing with a rinsing medium to remove residual washing medium from the aggregate. The washed and rinsed aggregate may then be permitted to equilibrate or is subjected to a drying procedure. Preferably, the washed and rinsed aggregate is again subjected to curing/hydro-thermal calcining.

Abstract: A process is provided for converting feedstock hydrocarbon compounds over a catalyst composition which comprises clay and a zeolite component, at least one of which has been treated with a phosphorus-containing compound, for example, ammonium dihydrogen phosphate or phosphoric acid, and which is spray dried at a low pH, preferably lower than about 3. An embodiment of the present invention comprises an improved catalytic cracking process to produce high octane gasoline and increased lower olefins, especially propylene and butylene.

Abstract: A process and catalyst is provided for the hydrogenation of a hydrocarbon feedstock comprising a substantial portion of a distillate hydrocarbon feedstock, wherein said distillate hydrocarbon feedstock consists essentially of material boiling between about 150.degree. F. and about 700.degree. F. at atmospheric pressure, which comprises reacting the feedstock with hydrogen at hydrogenation conditions in the presence of a catalyst comprising from about 0.1% to about 2.0% by weight of palladium and from about 0.1% to about 2.0% by weight of platinum and a support comprising borosilicate, for producing a hydrogenated product.

Abstract: The present invention is directed to a novel catalyst composition and its use in the dehydrogenation of paraffins to olefins. The catalyst comprises an alloy of a Group VIII noble metal and a metal selected from the group consisting of zinc and gallium on a support selected from the group consisting of silica, zinc oxide modified silica and zinc oxide modified silica-pillared clays when said alloy is a zinc alloy, and silica, gallium oxide modified silica and gallium oxide modified silica-pillared clays when said alloy is a gallium alloy. The instant catalyst is an active and selective catalyst for the catalytic dehydrogenation of paraffins to olefins, especially gaseous paraffins, having the added benefit of retaining high activity and selectivity even following repeated regeneration by calcination in oxygen containing gas at temperatures of 450.degree. C. to 650.degree. C., preferably 450.degree. C. to 500.degree. C.

Abstract: This invention is to a method of manufacturing fluid catalytic cracking catalyst. In particular, the invention is to a method of manufacturing a catalytic cracking catalyst which incorporates a step of matching the isoelectric point of each component of the catalyst framework structure to the pH of an inorganic oxide sol used to form the matrix component of the catalyst. The resulting catalyst product has a controlled pore size and is extremely durable.

Abstract: The preparation is disclosed of an extruded catalyst based on a silica/alumina gel, which catalyst is particularly active in acid-catalyzed reactions, such as the oligomerization of light olefins, e.g., propylene.